Naver Novel / I Want to Live Comfortably, Crown Prince Sado

This is an alternate history novel by author Kkadaroppski, titled 'I Want to Live Comfortably, Crown Prince Sado'. When Crown Prince Sado's madness fully erupts, he asks Hong Bong-han for medicine, regardless of its effectiveness. After taking the medicine, he dreams of living for 15 years in the future. A notable feature is its highly literary writing style, though less so compared to the author's previous works. Additionally, memes that pop up here and there are well-integrated. The thorough historical accuracy and the occasional insane plot developments derived from it are quite entertaining. I'm currently reading it myself and highly recommend giving it a try.